// Copyright 2019 Yan Yan
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef SPARSE_CONV_INDICE_FUNCTOR_H_
#define SPARSE_CONV_INDICE_FUNCTOR_H_
#include <tensorview/tensorview.h>

namespace spconv
{
namespace functor
{
template <typename Device, typename Index, typename IndexGrid, unsigned NDim>
struct CreateConvIndicePairFunctorP1
{
    Index operator()(
        const Device& d, tv::TensorView<const Index> indicesIn,
        tv::TensorView<Index> indicesOut, tv::TensorView<IndexGrid> gridsOut,
        tv::TensorView<Index> indicePairs, tv::TensorView<Index> indiceNum,
        tv::TensorView<Index> indicePairUnique,
        const tv::SimpleVector<Index, NDim> kernelSize,
        const tv::SimpleVector<Index, NDim> stride,
        const tv::SimpleVector<Index, NDim> padding,
        const tv::SimpleVector<Index, NDim> dilation,
        const tv::SimpleVector<Index, NDim> outSpatialShape, bool transpose);
};

template <typename Device, typename Index, typename IndexGrid, unsigned NDim>
struct CreateConvIndicePairFunctorP2
{
    Index operator()(
        const Device& d, tv::TensorView<const Index> indicesIn,
        tv::TensorView<Index> indicesOut, tv::TensorView<IndexGrid> gridsOut,
        tv::TensorView<Index> indicePairs, tv::TensorView<Index> indiceNum,
        tv::TensorView<Index> indicePairUnique,
        const tv::SimpleVector<Index, NDim> outSpatialShape, bool transpose,
        bool resetGrid=false);
};

template <typename Device, typename Index, typename IndexGrid, unsigned NDim>
struct CreateConvIndicePairFunctor
{
    Index operator()(
        const Device& d, tv::TensorView<const Index> indicesIn,
        tv::TensorView<Index> indicesOut, tv::TensorView<IndexGrid> gridsOut,
        tv::TensorView<Index> indicePairs, tv::TensorView<Index> indiceNum,
        const tv::SimpleVector<Index, NDim> kernelSize,
        const tv::SimpleVector<Index, NDim> stride,
        const tv::SimpleVector<Index, NDim> padding,
        const tv::SimpleVector<Index, NDim> dilation,
        const tv::SimpleVector<Index, NDim> outSpatialShape, bool transpose, bool resetGrid=false);
};

template <typename Device, typename Index, typename IndexGrid, unsigned NDim>
struct CreateSubMIndicePairFunctor
{
    Index operator()(
        const Device& d, tv::TensorView<const Index> indicesIn, tv::TensorView<IndexGrid> gridsOut,
        tv::TensorView<Index> indicePairs, tv::TensorView<Index> indiceNum,
        const tv::SimpleVector<Index, NDim> kernelSize,
        const tv::SimpleVector<Index, NDim> stride,
        const tv::SimpleVector<Index, NDim> padding,
        const tv::SimpleVector<Index, NDim> dilation,
        const tv::SimpleVector<Index, NDim> outSpatialShape, bool transpose, bool resetGrid=false);
};
} // namespace functor
} // namespace spconv

#endif